A/T - Check Ball Added For Smoother Shift R to N
89toyota04REFERENCE: TRANSMISSION AND CLUTCH
NUMBER: 005
DATE: 06-23-89
MODEL: MX7 #, MA7 #, RN6 #, VN6 #
TITLE VALVE BODY MODIFICATION ON A340E/H
To reduce Reverse gear to Neutral shift shock on vehicles equipped with the A340E/H transmission, an additional rubber check ball has been incorporated in the upper valve body as shown below.
When installing the additional rubber check ball in the upper valve body, TMS recommends that on early production (85-87 RN, 861/2-87 MA7 #) transmissions, all (B) type steel check balls be replaced with new (B) type rubber check balls (see PART NUMBER INFORMATION section of this bulletin). Check ball quantity and diameter are identified in the table below.
PRODUCTION EFFECTIVE:
Starting VIN Production Date A/TM Serial A/TM Model
JT2MX73E # J 0139199 September 1987 87GR-09036 A340E
JT2MA7 # * # J0079934 " " 87HR-00001 "
JT # RN6 # * # J0189063 " " 87HS-00130 A340H
JT # RN6 # * # J5034964 " " " " "
JT # RN6 # * # J8000162 " " " " "
JT4RN6 # * # J5090057 " " " " "
JT # VN6 # * # J0000019 October 1987 87HS-96452 "
JT4VN6 # * # J0000012 " " " " "
PART NUMBER INFORMATION
Prev. Part No. New Part No. Part Name Quantity
------ 35495-22020 * Ball, check 1
* The additional rubber check ball may be installed on previous vehicles with the A340E/H that did not incorporate the check ball in production.